<template>
  <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>用户管理</el-breadcrumb-item>
          <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>   

        <!-- 卡片视图区域 -->
        <el-card class="box-card">
            <!-- 搜索与添加区 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisable= true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column prop="username" label="姓名" width="180"></el-table-column>
                <el-table-column prop="email" label="邮箱" width="180"></el-table-column>
                <el-table-column prop="mobile" label="电话" width="180"></el-table-column>
                <el-table-column prop="role_name" label="角色" width="180"></el-table-column>
                <el-table-column label="状态" width="180">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button 
                          type="primary" 
                          icon="el-icon-edit" 
                          size="mini"  
                          @click="showEditDialog(scope.row.id)"
                        >
                          </el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip effect="dark" content="修改按钮" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1,2,5,10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>
        <!-- 添加用户对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisable" width="50%" @close="addDialogClosed">

            <!-- 内容主体区 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisable = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>                
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>                
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>                
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                            v-for="item in rolestList"
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
</el-dialog>
  </div>
</template>

<script>
export default {
    data(){
        //验证邮箱的规则
        var checkEmail = (rules,value,cb) => {
            //验证邮箱的正则表达式
            const regEmail = /^[a-zA-Z0-9_.-]+@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.[a-zA-Z0-9]{2,6}$/

            if(regEmail.test(value)){
                //合法的邮箱
                return cb()
            }
            cb(new Error('请输入合法的邮箱'))
        }
        //验证手机号的规则
        var checkMobile = (rules,value,cb) => {
            //验证手机号的正则表达式
            const regMobile=/^(0|86|17951)?(13[0-9]|15[123456789]|17[678]|18{0-9}|14[57])[0-9]{8}$/

            if(regMobile.test(value)){
                return cb()
            }

            cb(new Error('请输入合法的手机号'))
        }
        return {
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                //当前页数
                pagenum:1,
                //当前每页最多显示多少条数据
                pagesize:2
            },
            userlist:[],
            total:0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisable:false,
            setRoleDialogVisible:false,
            //添加用户的表单数据
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            //添加表单的验证规则
            addFormRules:{
                username:[
                    {required:true,message:'请输入用户名',trigger:'blur'},
                    {min:3,max:10,message:'用户名的长度在3~10给字符组件',trigger:'blur'}
                ],
                password:[
                    {required:true,message:'请输入密码',trigger:'blur'},
                    {min:6,max:15,message:'密码长度在6~15给字符之间',trigger:'blur'}
                ],
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入手机',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                ]
            },
            //修改用户对话框的显示与隐藏
            editDialogVisible:false,
            //查询到的用户信息对象
            editForm:{},
            //修改表单的验证规则对象
            editFormRules:{
                email:[
                    {required:true,message:'请输入用户邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入用户手机',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                ]
            },
            //需要被分配角色的用户信息
            userInfo:{},
            //所有角色的数据列表
            rolestList:[],
            //已选中的角色id值
            selectedRoleId:''
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res} = await this.$http.get('users',{
                params:this.queryInfo
            })
            if(res.meta.status !==200) {
                return this.$message.error('获取用户列表失败！')
            }
            this.userlist = res.data.users
            this.total = res.data.total
            console.log(res)
        },
        //监听pagesize改变的事件
        handleSizeChange(newSize){
            // console.log(newSize)
            this.queryInfo.pagesize=newSize
            this.getUserList()
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage){
            // console.log(newPage)
            this.queryInfo.pagenum=newPage
            this.getUserList()
        },
        //监听switch开关的改变
        async userStateChanged(userinfo){
            // console.log(userinfo)
            const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !== 200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败!')
            }
            this.$message.success('更新用户状态成功！')
        },
        //监听用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮，添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async valid => {
                // console.log(valid)
                if(!valid) return
                //发起添加用户的网络请求
                const {data:res} = await this.$http.post('users',this.addForm)

                if(res.meta.status !== 201) {
                    this.$message.error('添加用户失败！')
                }
                this.$message.success('添加用户成功!')
                //隐藏添加用户的对话框
                this.addDialogVisable = false
                //重新获取用户列表
                this.getUserList()
            })
        },
        //展示编辑用户的对话框
        async showEditDialog(id){   
            // console.log(id)
            const {data:res} = await this.$http.get('users/'+id)
            if(res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败！')
            }
            this.editForm = res.data
            this.editDialogVisible = true
            console.log(res)
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid => {
                // console.log(valid)
                if(!valid) return
                //发起修改用户信息的数据请求
                const {data:res} = await this.$http.put('users/'+ this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                   })

                   if(res.meta.status !== 200) {
                       return this.$message.error('更新用户信息失败！')
                   }

                   //关闭对话框
                    this.editDialogVisible=false
                   //刷新数据列表
                    this.getUserList()
                   //提示修改成功
                   this.$message.success('更新用户信息成功！')
            })
        },
        //根据id删除对应的用户信息
        async removeUserById(id){
            // console.log(id)
            //弹框询问用户是否删除数据

             const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            //如果用户确认删除，则返回值为字符串confirm
            //如果用户取消了删除，则返回值为cancel
            // console.log(confirmResult)

            if(confirmResult !== 'confirm') {
                return this.$message.info('已经取消删除')
            }

            const {data:res} = await this.$http.delete('users/'+ id)
            if(res.meta.status !== 200) {
                return this.$message.error('删除用户失败!')
            }
            this.$message.success('删除用户成功！')
            //刷新列表
            this.getUserList()
        },
        //展示分配角色的对话框
        async setRole(userInfo){
            this.userInfo = userInfo

            //在展示对话框之前，获取所有角色的列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败！')
            }
            this.rolestList = res.data

            this.setRoleDialogVisible = true
        },
        //点击按钮分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色！')
            }

            const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid: this.selectedRoleId})
            this.$message.success('更新角色成功！')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>

<style lang="less" scoped> 

</style>